Identity is such a crucial affair that one shouldn't rush into it.

You can't take a knife on a plane anymore, but you can get on carrying a virus.

Ebola isn't a respiratory virus. It doesn't spread through the airborne route. So it's not likely to spread like wildfire around the world and kill tens of thousands or hundreds of thousands of people. That's what I think of as the next big one.

We're shaking loose viruses and dislodging them from their natural ecological limitations, places where they aren't very abundant and have competition, even within a single animal. We introduce them into a new, rich habitat called the human population, where they can flourish more abundantly and cause more trouble.

Islands are havens and breeding grounds for the unique and anomalous. They are natural laboratories of extravagant evolutionary experimentation.

Most Americans know nothing about the African forest, and it seems to them a very scary, spooky dangerous place. I've spent a lot of time in the forests of central Africa. I know they're beautiful places that contain a lot of different kinds of creatures, including some that carry Ebola.